Saki's only son, Hitoshi, is a timid boy who is always bullied by his friends. Worried about his son, she tried to warn his friends and get them to stop bullying him, but... he fell into a trap set by some brats. She thought he was just a child, and underestimated him, but now her days are filled with the sexual desires of young boys, and she continues to satisfy them with her ripe body.